For U. S. investors, the dollar was a thorn in the side.

对美国投资者来说，美元真是个眼中钉、肉中刺。

youdao

He removes a thorn from a lion 's paw.

他从狮子脚掌上拔下一根刺。

youdao

A sepal, petal, and a thorn Upon a common summer "s morn — a flask of Dew — a Bee or two — a Breeze — a caper in the trees — and I" m a Rose!

一个萼片，一叶花瓣，和一根荆棘在一个普通的夏日晨曦—一瓶露水—一只或两只蜜蜂—一缕轻风—一株马槟榔长在树林里—而我，则是一朵玫瑰！

youdao

He lives at the top of the cliffs in Burton Bradstock in the seat of Dorset West - and, as we found, he's a thorn in the side of the local Tory Oliver Letwin whom he's trying to displace by encouraging tactical voting.

BBC: May 29

With Deacon off, Hull's former Wakefield half-back Sam Obst was a constant thorn in Wigan's side with his elusive running and his break set up the position for second rower Westerman to force his way over for an equalising try.

BBC: Wigan Warriors 14-12 Hull FC

As the capital's elected mayor, he would probably become a thorn in Mr Blair's side arguably even the most influential Labour politician apart from Mr Blair himself.

ECONOMIST: Bagehot